r - How do I change the polygon fill color and border color for SpatialPolygons objects? - Geographic Information Systems Stack Exchange

I have SpatialPolygons or SpatialPolygonsDataFrames which I'd like to plot. How do I change the color using the three plotting systems in R (base graphics, lattice graphics, and ggplot2)? Example

Fast way to convert raster to polygon shapefile in R - Geographic Information Systems Stack Exchange

Overlaying spatial polygon with grid and checking in which grid element specific coordinates are located using R - Geographic Information Systems Stack Exchange

r - Draw polygon from raster after occurrence modeling - Stack Overflow

geometry conversion - Convert polygons into spatial points to use R redlistr package - Geographic Information Systems Stack Exchange

arcgis desktop - Determining the area of each polygon within a polygon boundary? - Geographic Information Systems Stack Exchange

Fishnets and Honeycomb: Square vs. Hexagonal Spatial Grids

qgis - Changing polygon boundary thickness/color - Geographic Information Systems Stack Exchange

qgis - Change color polygons by area of polygons - Geographic Information Systems Stack Exchange

How to store the colors of SpatialPolygons in R - Stack Overflow

ggplot2 - How to draw and fill polygons from a SpatialPolygonsDataFrame with R plotly - Stack Overflow